US20120173192A1 - Apparatus and method for automatically recognizing position of wheel of vehicle - Google Patents

Apparatus and method for automatically recognizing position of wheel of vehicle Download PDF

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Publication number
US20120173192A1
US20120173192A1 US13/150,978 US201113150978A US2012173192A1 US 20120173192 A1 US20120173192 A1 US 20120173192A1 US 201113150978 A US201113150978 A US 201113150978A US 2012173192 A1 US2012173192 A1 US 2012173192A1
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United States
Prior art keywords
wheel
vehicle
variation
rotation
pressure
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Abandoned
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US13/150,978
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English (en)
Inventor
Jong Hyeong Song
Kyungno Lee
Jong Woo Han
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Samsung Electro Mechanics Co Ltd
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Samsung Electro Mechanics Co Ltd
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Assigned to SAMSUNG ELECTRO-MECHANICS CO., LTD reassignment SAMSUNG ELECTRO-MECHANICS CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAN, JONG WOO, LEE, KYUNGNO, SONG, JONG HYEONG
Publication of US20120173192A1 publication Critical patent/US20120173192A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0415—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
    • B60C23/0416—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels allocating a corresponding wheel position on vehicle, e.g. front/left or rear/right
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0474—Measurement control, e.g. setting measurement rate or calibrating of sensors; Further processing of measured values, e.g. filtering, compensating or slope monitoring
    • B60C23/0477—Evaluating waveform of pressure readings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0486—Signalling devices actuated by tyre pressure mounted on the wheel or tyre comprising additional sensors in the wheel or tyre mounted monitoring device, e.g. movement sensors, microphones or earth magnetic field sensors
    • B60C23/0488—Movement sensor, e.g. for sensing angular speed, acceleration or centripetal force

Definitions

  • the present invention relates to an apparatus and a method for automatically recognizing a position of a wheel of a vehicle.
  • a tire pressure monitoring system (TPMS), as one of the technical configurations in accordance with this, is extensively used and applied in a function for automated position recognition of automatically distinguishing positions of vehicle wheels.
  • the use and applied technique of the TPMS are being expanded.
  • the TPMS can check which wheel has a pressure deviating from the normal pressure when the pressure of the tire deviates from a normal level.
  • the position of the wheel is judged by analyzing a signal transmitted from an LF transmitter installed near each vehicle wheel and an RF signal received from a TPMS sensor module in response to the transmitted signal.
  • the above method has an advantage in that the position of the wheel can be discovered very accurately.
  • the above method has a trouble of connecting a signal line to a point closer to each wheel and installing the LF transmitter and a disadvantage of requiring a high installation cost of the system.
  • left and right positions of the wheels are judged by installing 2-axis acceleration sensors for recognizing rotational directions of the wheels to recognize the rotational directions of the wheels, and combining values related to traveling directions (forward and backward) of the vehicle with the recognized rotational directions. That is, when the vehicle travels forward, the wheel is recognized as a right wheel if the wheel rotates clockwise, and the wheel is recognized as a left wheel if the wheel rotates counterclockwise.
  • a method of using 2-axis acceleration sensors or geomagnetic sensors is suggested in recognizing the rotational directions of the wheels in order to distinguish the left wheel and the right wheel.
  • the above method is the same as the above method in that front and rear wheels are distinguished by the strength of RF signals.
  • the front and rear wheels are distinguished by the strength of the FR signals that are transmitted from general TPMS sensor modules to ECUs. For example, when the ECU is installed at a front bump of the vehicle, the corresponding wheel is judged as a front wheel if the strength of the RF signal is strong, but the corresponding wheel is judged as a rear wheel if the strength of the RF signal is weak.
  • the method of distinguishing the front and rear wheels by the strength of the RF signals has a problem in that the ECUs are installed at limited positions. More specially, a general vehicle is made of metallic materials, and the RF signal is distorted by the metallic materials of this vehicle. When the ECUs are not installed at the front and rear bumps of the vehicle, but at other positions, accuracy in distinguishing the front and rear wheels by the strength of the RF signals is decreased due to the distortion of the RF signals by the body of the vehicle. In other words, limiting the installation positions of the ECUs to the front and rear bumps means that the installation cost of the system is increased. Furthermore, since the front and rear bumps are at the positions where they are impacted more frequently than other parts of the body of the vehicle, the ECUs are likely to be broken frequently.
  • Another method is that the positions of the wheels are judged by using a relation between ABS data and a pressure of the wheel measured from the TPMS censure module. More specially, the wheel is pressed further due to weight of the vehicle as the pressure of the wheel becomes lower. When the vehicle travels in this state, the number of rotation of the wheel is more, compared with other wheels having normal wheel pressures. The number of rotation is measured and analyzed by the ABS data.
  • the above method comes less expensive by utilizing an ABS generally installed in the vehicle and using a value from a pressure sensors basically installed at each TPMS. However, this method has a problem in that the position of the wheel can not be judged when the pressure of the front, rear, left, or right wheel is changed while moving.
  • the method of automatically recognizing the position of the vehicle wheel according to the prior art requires more installation cost of the system due to the limitation according to installation position of the ECU, or causes a problem of reliability. Furthermore, the above method has technical difficulty, reliability deterioration, or deterioration in judging reliability caused by installing LF transmitters near respective wheels.
  • the present invention has been made in an effort to provide an apparatus and a method for automatically recognizing a position of a wheel of a vehicle capable of automatically recognizing the position of the wheel of the vehicle, that is, a front, rear, left, or right wheel of the vehicle even without an increase in cost and a deterioration in judging reliability, by judging the position of the wheel of the vehicle through a variation in rotation and a rate of variation in pressure, wherein the apparatus includes a rotation sensor unit sensing a variation in rotation of the wheel of the vehicle and a pressure sensor unit sensing a rate of variation in pressure of the wheel of the vehicle.
  • an apparatus for automatically recognizing a position of a wheel of a vehicle including: a rotation sensor unit sensing a variation in rotation of the wheel of the vehicle; a pressure sensor unit sensing a rate of variation in pressure of the wheel of the vehicle; and a sensor control unit judging the position of the wheel of the vehicle by the variation in rotation and the rate of variation in pressure obtained from the rotation sensor unit and the pressure sensor unit.
  • the sensor control unit may judge the position of the wheel of the vehicle by dw/dt ⁇ dp/dt, in which dw/dt is the variation in rotation and dp/dt is the rate of variation in pressure.
  • the wheel may be judged as a front wheel when a value of dw/dt ⁇ dp/dt has a negative ( ⁇ ) sign and the wheel may be judged as a rear wheel when the value of dw/dt ⁇ dp/dt has a positive (+) sign.
  • an apparatus for automatically recognizing a position of a wheel of a vehicle including: a rotation sensor unit sensing a variation in rotation and a rotational direction of the wheel of the vehicle; a pressure sensor unit sensing a rate of variation in pressure of the wheel of the vehicle; and a sensor control unit judging whether the wheel is a left wheel or a right wheel by the rotational direction obtained from the rotation sensor unit, and judging whether the wheel is a front wheel or a rear wheel by the variation in rotation and the variation in pressure of the wheel of the vehicle obtained from the rotation sensor unit and the pressure sensor unit.
  • the judging whether the wheel is the front wheel or the rear wheel may be performed by judging the wheel as the front wheel when a value of dw/dt ⁇ dp/dt has a negative ( ⁇ ) sign and judging the wheel as the rear wheel when the value of dw/dt ⁇ dp/dt has a positive (+) sign, in which dw/dt is the variation in rotation and dp/dt is the rate of variation in pressure.
  • a method for automatically recognizing a position of a wheel of a vehicle including: sensing a variation in rotation and a rotational direction of the wheel of the vehicle; sensing a rate of variation in pressure of the wheel of the vehicle; and judging whether the wheel is a left wheel or a right wheel by the rotational direction obtained from a rotation sensor unit, and judging whether the wheel is a front wheel or a rear wheel by using a product value of the variation in rotation and the variation in pressure of the wheel of the vehicle obtained from the rotation sensor unit and the pressure sensor unit.
  • the judging whether the wheel is the front wheel or the rear wheel may be performed by judging the wheel as the front wheel when a value of dw/dt ⁇ dp/dt has a negative ( ⁇ ) sign and judging the wheel as the rear wheel when the value of dw/dt ⁇ dp/dt has a positive (+) sign, in which dw/dt is the variation in rotation and dp/dt is the rate of variation in pressure.
  • FIG. 1 is a schematic constitutional diagram for estimating a variation in pressure of a tire according to acceleration and deceleration at the traveling time of a vehicle;
  • FIG. 2 is a schematic view illustrating the use of a vehicle having an apparatus for automatically recognizing a position of a wheel of a vehicle according to a preferred embodiment of the present invention.
  • FIG. 3 is a schematic constitutional view of an apparatus for automatically recognizing a position of a wheel of a vehicle according to a preferred embodiment of the present invention.
  • FIG. 1 is a schematic constitutional diagram for estimating a variation in pressure of a wheel according to acceleration or deceleration at the traveling time of a vehicle.
  • signals from rotation sensors connected to the wheels and signals from pressure sensors connected to wheels are analyzed to distinguish a front wheel from a rear wheel of the vehicle.
  • a rate of variation in pressure, dp/dt, of the wheel of the front wheel 110 has the positive (+) sign
  • a rate of variation in pressure, dp/dt, of the wheel of the rear wheel 120 has the negative ( ⁇ ) sign.
  • FIG. 2 is a schematic view for illustrating the use of a vehicle having an apparatus for automatically recognizing a position of a wheel of a vehicle according to a preferred embodiment of the present invention.
  • the apparatus for automatically recognizing a position of a wheel of a vehicle according to the present invention is realized by TPMS sensor modules 130 , which are respectively installed at a light front wheel 112 , a left front wheel 111 , a light rear wheel 122 , and a left rear wheel 121 , of the vehicle to sense variations in rotation, rotational directions, and variations in pressure of the respective wheels.
  • FIG. 3 is a schematic constitutional view of an apparatus for automatically recognizing a position of a wheel of a vehicle according to a preferred embodiment of the present invention.
  • a TPMS sensor module 130 of the apparatus for automatically recognizing a position of a wheel of a vehicle includes a rotation sensor unit 131 , a pressure sensor unit 132 , and a sensor control unit 133 .
  • the rotation sensor unit 131 which is for sensing a rotational direction and a variation in rotation of the wheel of the vehicle, may use a gyro sensor, a 2-axis acceleration sensor, an angular velocity sensor, and so on.
  • the pressure sensor unit 132 is for sensing a rate of variation in pressure the wheel of the vehicle.
  • the sensor control unit 133 determines whether the wheel of the vehicle is positioned on the left, right, front, or rear through the variation in rotation, the rotational direction, and the rate of variation in pressure obtained from the rotation sensor unit and the pressure sensor unit.
  • a value from the rotation sensor installed inside the TPMS sensor module and the pressure of the tire are simultaneously changed.
  • the position of the wheel of the vehicle is judged by analyzing the variation in rotation and the rate of variation in pressure, of the wheel of the vehicle.
  • the rate of variation in pressure dp/dt of the tire of the front wheel 110 has the positive (+) sign and the rate of variation in pressure dp/dt of the tire of the rear wheel 120 has the negative ( ⁇ ) sign.
  • the variations in rotation dw/dt of the front wheel and the rear wheel all have the same negative ( ⁇ ) sign.
  • the variation in rotation dw/dt of the wheel of the vehicle obtained from the rotation sensor unit 131 has the positive (+) sign in all of the front wheel and the rear wheel equally.
  • the rate of variation in pressure dp/dt of the tire of the vehicle obtained from the pressure sensor unit 132 on the contrary to when the vehicle is decelerated, has the negative ( ⁇ ) sign in the front wheel and the positive (+) sign in the rear wheel.
  • the rotation sensor unit 131 is capable of judging the left wheel or the right wheel by sensing the rotational direction, that is, clockwise rotation and counterclockwise rotation. That is, when the vehicle travels forward, the right wheel is recognized if the wheel rotates clockwise, and the left wheel is recognized if the wheel rotates counterclockwise.
  • the present invention is capable of automatically recognizing the position of the wheel of the vehicle, for example, judging whether the wheel is a front wheel or a rear wheel, regardless of acceleration and deceleration of the vehicle, through the product of the variation in rotation dw/dt and the rate of variation in pressure dp/dt, that is, a value of dw/dt ⁇ dp/dt, and judging whether the wheel is a left wheel or a right wheel by the rotational direction sensed by the rotation sensor unit.
  • the method for automatically recognizing a position of a wheel of a vehicle includes: sensing a variation in rotation and a rational direction of the wheel of the vehicle; sensing a rate of variation in pressure of the wheel of the vehicle; and judging whether the wheel is a left wheel or a right wheel by the rotational direction obtained from a rotation sensor unit, and judging whether the wheel is a front wheel or a rear wheel by using a product value of the variation in rotation and the rate of variation in pressure of the wheel of the vehicle respectively sensed from the rotation sensor unit and the pressure sensor unit.
  • the judging whether the wheel is a front wheel or a rear wheel may be performed by judging the wheel as the front wheel when a value of dw/dt ⁇ dp/dt has a negative ( ⁇ ) sign and judging the wheel as the rear wheel when the value of dw/dt ⁇ dp/dt has a positive (+) sign, in which dw/dt is the variation in rotation and dp/dt is the rate of variation in pressure.
  • the present invention includes a rotation sensor unit sensing a variation in rotation and a rotational direction of the wheel of the vehicle and a pressure sensor unit sensing a rate of variation in pressure of the wheel of the vehicle.
  • the present invention has an effect of providing an apparatus and a method for automatically recognizing a position of a wheel of a vehicle capable of automatically recognizing the position of the wheel of the vehicle, that is, front, rear, left, and right wheels of the vehicle even without an increase in cost and a deterioration in judging reliability, by judging the position of the wheel of the vehicle through a variation in rotation and a rate of variation in pressure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
US13/150,978 2010-12-31 2011-06-01 Apparatus and method for automatically recognizing position of wheel of vehicle Abandoned US20120173192A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100139972 2010-12-31
KR1020100139972A KR101343168B1 (ko) 2010-12-31 2010-12-31 차량바퀴의 위치 자동인식장치 및 위치 자동인식방법

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US (1) US20120173192A1 (de)
EP (1) EP2471674B1 (de)
KR (1) KR101343168B1 (de)
CN (1) CN102555694A (de)

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US11441937B2 (en) * 2019-08-13 2022-09-13 Tusimple, Inc. Vehicle weight distribution determination

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FR2995991B1 (fr) * 2012-09-21 2014-09-05 Continental Automotive France Procede de localisation de la position de roues equipees d'un boitier electronique integrant des moyens de mesure d'un parametre de fonctionnement de la dite roue
US20140379231A1 (en) * 2013-06-24 2014-12-25 Delphi Technologies, Inc. System and method for automatic location assignment of wheels equipped with pressure sensors
CN107499072A (zh) * 2017-08-04 2017-12-22 江苏博锐格电子科技有限公司 一种智能匹配轮胎及换胎的方法
US20200384813A1 (en) * 2017-12-15 2020-12-10 Bridgestone Corporation Tire mount position detection system, tire mount position detection method, and tire mount position detection program
US20220230481A1 (en) * 2021-01-18 2022-07-21 The Goodyear Tire & Rubber Company System for auto-location of tires

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US6278363B1 (en) * 2000-07-14 2001-08-21 Motorola, Inc Method and system for monitoring air pressure of tires on a vehicle
US20110308310A1 (en) * 2010-06-21 2011-12-22 Schrader Electronics Ltd. Load Based Wheel Position Determination

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US6278363B1 (en) * 2000-07-14 2001-08-21 Motorola, Inc Method and system for monitoring air pressure of tires on a vehicle
US20110308310A1 (en) * 2010-06-21 2011-12-22 Schrader Electronics Ltd. Load Based Wheel Position Determination

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11441937B2 (en) * 2019-08-13 2022-09-13 Tusimple, Inc. Vehicle weight distribution determination
US20220381602A1 (en) * 2019-08-13 2022-12-01 Tusimple, Inc. Vehicle weight distribution determination
US12000727B2 (en) * 2019-08-13 2024-06-04 Tusimple, Inc. Vehicle weight distribution determination

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Publication number Publication date
EP2471674B1 (de) 2014-03-05
CN102555694A (zh) 2012-07-11
EP2471674A3 (de) 2012-09-05
KR20120077862A (ko) 2012-07-10
EP2471674A2 (de) 2012-07-04
KR101343168B1 (ko) 2013-12-19

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AS Assignment

Owner name: SAMSUNG ELECTRO-MECHANICS CO., LTD, KOREA, REPUBLI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SONG, JONG HYEONG;LEE, KYUNGNO;HAN, JONG WOO;REEL/FRAME:026372/0907

Effective date: 20110401

STCB Information on status: application discontinuation

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